stockman



('No Model.)

G. W. -sroGKA/IANl y AMMONIA RBFRIGBRATING APPARATUS. No.. 264,113..Patented Sept. 12, 1882,

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UNITED STATES PATENT OFFICE.

eEoEeE w. s'rooKMAN, 0E innianflronis, INDIANA.

AMMONIA REFRIGERATING APPARATUS.

SPECIFICATION formingpart. of Letters Patent No. 264,113, datedSeptember 12, 1882,

(No model.)

To all whom it may concern:

Beit known that I, GEORGE W. STOCKMAN, ot' Indianapolis, county otMarion, Indiana, have invented an Improvement in Ammonia RefrigeratingApparatus, designed to be used in connection with a previous inventionfor which Letters Patent No. 245,325 were issued to me August 9,1881 andI refer to those Letters Patent for afull description of thatinvention;but in order to explain the present invention some explanation of theprevious one is necessary.

A represents a retort or evaporator with heaterB. Cisavapor-condenser.Disaeooler for weak or diluted liquor, and E is a refrigerator, all ofthe ordinary kind.

F represents the shell of the absorber,whieh is surrounded by thewater-jacket G, and His a purge-tank.

The heater B is provided with a steam-pipe, J, near its top, and pipe Kat. its base, for carrying ofi' the condensed steam.

rThe vaper-pipe L leads from the top of the retort'A to the condenser C,and is provided with a valve, 1, near the retort.

lll is the condensing-coil in the condenser C.

The pipe V has a pressure-gage,g, and valve b, and enters thedistributer O. E

I P P are independent coils of pipe in the refrigerator-box 19,01'ie endof each starting from the distributer O, with valves y, and dischargingat the other end in the collector Q, from which descends a pipe, IR, forthe spent vapors to pass through into the absorber S. This pipe has avalve, 7, and pressure-,gage g2.

N is a pipe leading from the base ot" the retort A into the cooler D,forming the coolercoil U, and discharging into the absorber F throughthe cold-liquor pipe T and the rose-jet` or sprinkler W. This pipeN alsohas a valve, 3, near the retort A, and is used as the weakliquor pipe. i

The Coldwater-supply pipe X supplies the condenserC with water through abranch pipe, Y, and through another branch, m, cools the absorber F.

Z is a water-pipe leading from the condenser vC to the cooler D,andsupplies the latter with water.

pipe, c. y Y

The purge-pipe b leads from the top of the absorber F into the tank H,and is provided At the top of this cooler is an overiiowany otherincongealable liquid.

l with a cock, b2. 4The tank El has a pet-cock,

e, for discharging its contents.

The shell ot' the absorber Ffhas a pressure` gage, g3, and a Scotchglass gage, c, at one side to show the height of 4the liquor in theabsorber.

The force-pump I is provided with au inletpipe, i, whichleads from theabsorber through the water-jacket G to the pump, with a valve, 5,between them. The discharge-pipe t" leads from the pump to the retort,with two 'cheekvalves,ff, between the valves2 and 4, as shown.

a2 is a branch pipe leadiugirom the pipe V, and having valves a3 and(tte an exigirle, am, upon the cylinder of which is placed stufngbox, L,which may be tilled wit/h yeerine or c is the exhaust-pipe leading` fromthe cy linder ot' the engine to the distributer O.

The operation ot' my apparatus is as follows: The retort A is chargedwith aqua-ammonia abouttwo-thirdsfull. TheabsorberFischarged with thesame about halt' full. The rettrt is Iliade to withstand a very highpressure, and b v means of steam in the heater B (or any other mode ofheating) the ammonia in the retort is evaporated and passes through pipeL into the condenser C, where it is reduced again to a liquid state. Asit passes out the pipeV it begins to vaporize, being relieved ofpressure, and rapidly absorbs heat and reduces the snrroundingtemperature. It' the valve I; is opened slightly, the gas will flow intothe distributer O and through each ol" the coils P, returning into thecollector Q, and passing thence downward into the absorberSand into theiuid contained therein, making it rich liquor, and from thence is takenout through pipe t' into the pump, and again forced into the retort. Theweak liquor'froin the retort is carried offthrough pipe N into the coilu, and from thence through pipe T into the absorber, where it isenriched and mingles with the other liquid. to be taken. U5 up by thepump. If the valve a3 be slightly opened, the anhydrous ammoniabecomesvapor-ized and expands rapidly, and, passing downward through pipe a?,enters the steamchest of the engine, and from thence into the cylinder,and after serving as a motor there IOO `it exhausts through pipe c, toenter the refrigeratorcoils P in the usual way.

The stufting-box being filled with glycerine L) QGLLHE?,

prevents the freezing;` of the piston-rod in lche cylinder. y

By this apparatus [design to use the aminonia-vapor to drive the enginethat works the 5 pump, and let the exhaust-vapor enter therefrigerating-coils to nish its work there. The valves a3 and b nmy bothbe open nl; the same time, if desired; or, if the exhaust-vapor issufficient for the purpose of' freezing, the valve b 1o muy be closed.

What I elailn, and desire to secure by Letters Patent., is-

1. In an ammonia refrigerating apparatus, the conduction, by means ofsuitable pipes, of 15 sufficient vapor from the supply-pipe tothe engineto drive thepumps, in combination with means for exhausting the vaporfrom the eylinder into :i refrigerating coil or chamber.

2. In combination with the cylinder of au engine driven by ammoniwvapor,a. stuing box or sleeve tilled with incongealahle liquid, substantiallyas and for the purpose herein Llescribed.

In Witness whereof I have hereunto set my hand this 6th (luy of March,1882.

GEO. W. STOGKMAN.

Witnesses:

SAMUEL STEPHENs, JOHN J. WHEAT.

